Illy's can be found at any gourmet market. I get the Mount Hagen at my local health food store. I found a web page to order it, it's not cheap for freeze dried coffee but it's delicious. I always want a second cup but limit myself to one. It's perfect for the office since all you need is hot water.
http://www.internaturalfoods.com/MountHagen/MountHagen.html
http://www.internaturalfoods.com/MountHagen/MountHagen.html